常用的电工测量方法有三种()、()和()。
参考答案:直接测量法;比较测量;间接测量法
The police asked the little boy _____. [ ]
A. where did he live
B. where does he live
C. where he lived
D. where he lives
确定有无贫血的最佳指标为()
A.MCV、MCH、MCHC
B.RBC、Hb
C.网织红细胞计数
D.RDW
E.血沉